Enot Tsukim - Ein Feshkha
If you like to swim in pools with water from natural springs and have a nice barbecue, this oasis in the wasteland at the Dead Sea is just right for you.
And the fun fact is: This is the lowest nature reserve in the world! The park is very organized and you can find picnic tables everywhere and even an archaeological site from the Second Temple period. There is also an area in the park that is closed to the public to preserve the nature.